JPS6222472Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake operating device for a brake device provided on a rear wheel of a two-wheeled vehicle, mainly a motorcycle.

Generally, in an operating device for a foot brake device provided on the rear wheel of a motorcycle, the brake lever of the brake device and the brake pedal pivotally supported on the vehicle body frame are connected by a brake system such as a Bowden wire or a brake rod, It is known that when the brake lever is depressed, the brake lever is rotated via the Bowden wire and the brake is applied.
Since the Bowden wire is flexible, it has the advantage of being able to freely select its path and transmitting braking force to the brake lever with less resistance, but on the other hand, it is inferior in rigidity and strength to brake rods and has some problems in durability. Further, although the brake rod has high rigidity and strength, it has the disadvantage that its path cannot be freely selected.

Therefore, in the present invention, the front end of the inner is connected to the brake pedal that is pivotally supported on the vehicle body frame, the rear end of the outer of the Bowden wire is connected to the swing arm of a rear fork, etc., and the front end of the brake rod is connected to the rear end of the inner. Connect the rear end of the brake rod to the brake lever of the brake device, take advantage of the respective advantages of the Bowden wire and the brake rod, and provide flexibility to the brake system that connects the brake pedal and brake lever to select a route. The main object of this invention is to provide a brake operating device for a two-wheeled vehicle that increases its durability while maintaining its degree of freedom.

In order to achieve the above object, the present invention provides a two-wheeled vehicle in which a swing arm of a rear fork or the like is pivotably supported on a body frame so as to be able to swing up and down, and a brake device is provided on a rear wheel mounted on the swing arm. The rear end of the outer part of the Bowden wire is connected to the front end of the inner part of the brake pedal which is pivotally supported on the vehicle body frame, and the rear end of the outer part of the Bowden wire is connected to the swing arm near the pivot point relative to the vehicle body frame, and the rear end of the inner part is connected to the rear end of the inner part. The front end of the rod is tied together, and the rear end of the rod is connected to the brake lever of the brake device.

An embodiment of the present invention will be described below with reference to the drawings.

At the rear of the body frame F of the motorcycle, a swing arm, that is, the front end of a rear fork 1 is pivotally supported by a hinge pin 2.
can swing up and down around its hinge pin 2. A damper 3 is connected between the rear fork 1 and the vehicle body frame F as usual, and a rear wheel W equipped with a drum brake device B is mounted on a shaft at the free end of the rear fork 1. The drum brake device B includes a brake lever 4 for operating the drum brake device B.
The brake is applied when the brake lever 4 is swung rightward in FIG.

A brake pedal 6 is pivotally supported 7 at the front of the vehicle body frame F, and an arm 8 integrated with the pedal 7 is connected to the front end of an inner 9i of a Bowden wire 9. The Bowden wire 9 is attached to the vehicle body frame F.
As shown in FIG. 2, an outer end 10 is integrally caulked 11 to the rear end of the outer 9o, and a bracket 12 is fixed near the pivot portion of the rear fork 1.
The outer end 10 is fixed to this bracket 12. The rear end of the inner wire 9i of the Bowden wire 9 projects toward the rear of the vehicle body frame F through the outer end 10, and a rod 13 is attached to the rear end.
The front end of is caulked 14. The rod 13 extends rearward along the vehicle body frame F, and the tip of the brake lever 4 is connected to its rear end so that its position can be adjusted. That is, a male thread 13a is formed at the rear end of the rod 13, and this male thread 13a passes through the tip of the brake lever 4 and is fitted with a nut 15 at the rear end.
is screwed on. A compression spring 16 wound around the rod 13 is compressed between a spring holder 13b provided in the middle of the rod 13 and the tip of the brake lever 4. press against.

In addition, in the figure, 17 and 18 are telescopic boots provided across the end of the outer 9o and the inner 9i, 19 is a torque link connecting the front fork 1 and the brake panel of the drum brake device B, and E is the vehicle body frame F. This is the engine installed in the.

Next, to explain the operation of the embodiment of the present invention, the brake pedal 6 is pressed to apply the brake now.
When you step on the button, the inner 9i of the Bowden wire 9 is pulled forward of the vehicle body frame F, and the rod 13 connected to the rear end is also pulled forward, pulling the brake lever 4 to the right in Figure 1, and the drum brake is activated. Device B can be braked. When the depression force on the brake pedal 6 is released, the brake device B
The brake lever 4 is returned to its original position by a return spring installed in the brake lever 4, and the brake is released.

When the rear fork 1 swings up and down together with the rear wheel W, the outer 9o of the Bowden wire 9 connected to the rear fork 1 and the front end of the brake rod 13 connected thereto are also displaced, but the amount of these displacements depends on the vehicle body frame of the rear fork 1. Since the pivot point for F and the connection point for the outer 9o are close to each other, there are few
There is no fear that excessive force will be applied to each part of 3.
Furthermore, the movement of the rear end portion of the Bowden wire 9 relative to the vehicle body can be reduced, and interference with the vehicle body frame F etc. can be easily avoided.

As described above, according to the present invention, the vehicle body frame F
The rear end of the outer 9o of the Bowden wire 9, which has the front end of the inner 9i connected to the brake pedal 6 which is pivotally supported 7 on the brake pedal 6, is connected to the swing arm of the rear fork 1, etc. Since the rear end of the rod 13 is connected to the brake lever 4 of the brake device B, the front half of the brake system that connects the brake pedal 6 and the brake lever 4 is a flexible Bowden wire 9.
The rear part of the brake system, which requires rigidity and strength, is made up of rods 13 that have great rigidity and strength, allowing for freedom in placement as a whole, and also durability. A high brake operating device can be obtained.

In particular, the rear end of the outer 9o of the Bowden wire 9 is connected to the swing arm near the pivot point relative to the vehicle body frame F, so that even if the swing arm follows the rear wheel W and swings violently up and down, At that time, the amount of displacement of the outer 9o and the front end of the rod 13 connected thereto can be reduced, and therefore, even though the outer 9o is connected to the swing arm, the vertical swing of the swing arm can be reduced. Accompanying bowden wire 9 and rod 13
Since there is no risk of excessive force being applied to each part of the body frame F, this contributes to improving their durability, and also reduces the relative movement of the rear end portion of the Bowden wire 9 to the vehicle body. Since interference with the wire 9 can be reasonably avoided, the degree of freedom in routing the wire 9 can be increased.

In the above embodiment, the boot 17 is replaced by the rod 1.
3, and the inner 9i may be protected from being visible from the outside.

[Brief explanation of the drawing]

The drawings show one embodiment of the device of the present invention, and FIG. 1 is a partial side view of a motorcycle equipped with the device of the present invention, and FIG. 2 is an enlarged sectional view taken along the line of FIG. 1. B...Brake device, F...Vehicle frame, W
... Rear wheel, 1 ... Rear fork, 2 ... Hinge pin as pivot point, 4 ... Brake lever, 6
... Brake pedal, 7 ... Shaft support, 9 ... Bowden wire, 9i ... Inner, 9o ... Outer, 1
3...Rotsud.

Claims (1)

[Scope of utility model registration request] In a two-wheeled vehicle in which a swing arm such as a rear fork 1 is pivotally supported on the body frame F so as to be able to swing up and down, and a brake device B is provided on the rear wheel W that is pivoted on the swing arm, a pivot support 7 is provided on the body frame F.
The rear end of the outer 9o of the Bowden wire 9, which connects the front end of the inner 9i to the brake pedal 6 that is
The swing arm is connected to the vehicle body frame F near its pivot point, and the front end of a rod 13 is tied to the rear end of the inner 9i, and the rear end of the rod 13 is connected to the brake lever of the brake device B. 4. A brake operating device for a two-wheeled vehicle.